# Copyright (c) 2015-2016, Loïc Hoguin <essen@ninenines.eu>
# Copyright (c) 2014, Enrique Fernandez <enrique.fernandez@erlang-solutions.com>
# This file is contributed to erlang.mk and subject to the terms of the ISC License.

.PHONY: eunit apps-eunit

# Configuration

EUNIT_OPTS ?=
EUNIT_ERL_OPTS ?=

# Core targets.

tests:: eunit

help::
	$(verbose) printf "%s\n" "" \
		"EUnit targets:" \
		"  eunit       Run all the EUnit tests for this project"

# Plugin-specific targets.

define eunit.erl
	Enabled = case "$(COVER)" of
		"" -> false;
		_ ->
			case filelib:is_dir("ebin") of
				false -> false;
				true ->
					case cover:compile_beam_directory("ebin") of
						{error, _} -> halt(1);
						_ -> true
					end
			end
	end,
	case eunit:test($1, [$(EUNIT_OPTS)]) of
		ok -> ok;
		error -> halt(2)
	end,
	case {Enabled, "$(COVER)"} of
		{false, _} -> ok;
		{_, ""} -> ok;
		_ ->
			cover:export("$(COVER_DATA_DIR)/eunit.coverdata")
	end,
	halt()
endef

EUNIT_ERL_OPTS += -pa $(TEST_DIR) $(DEPS_DIR)/*/ebin $(APPS_DIR)/*/ebin $(CURDIR)/ebin

ifdef t
ifeq (,$(findstring :,$(t)))
eunit: test-build cover-data-dir
	$(gen_verbose) $(call erlang,$(call eunit.erl,['$(t)']),$(EUNIT_ERL_OPTS))
else
eunit: test-build cover-data-dir
	$(gen_verbose) $(call erlang,$(call eunit.erl,fun $(t)/0),$(EUNIT_ERL_OPTS))
endif
else
EUNIT_EBIN_MODS = $(notdir $(basename $(ERL_FILES) $(BEAM_FILES)))
EUNIT_TEST_MODS = $(notdir $(basename $(call core_find,$(TEST_DIR)/,*.erl)))

EUNIT_MODS = $(foreach mod,$(EUNIT_EBIN_MODS) $(filter-out \
	$(patsubst %,%_tests,$(EUNIT_EBIN_MODS)),$(EUNIT_TEST_MODS)),'$(mod)')

eunit: test-build $(if $(IS_APP),,apps-eunit) cover-data-dir
	$(gen_verbose) $(call erlang,$(call eunit.erl,[$(call comma_list,$(EUNIT_MODS))]),$(EUNIT_ERL_OPTS))

ifneq ($(ALL_APPS_DIRS),)
apps-eunit:
	$(verbose) eunit_retcode=0 ; for app in $(ALL_APPS_DIRS); do $(MAKE) -C $$app eunit IS_APP=1; \
		[ $$? -ne 0 ] && eunit_retcode=1 ; done ; \
		exit $$eunit_retcode
endif
endif